I should also stress that it is vital you you use the correct *versions* of the jars on your client classpath. This is also detailed in the user guide, but just for clarity they are (for 1.3.0.GA): jbossall-client.jar from the JBAS 4.2.0.GA distribution. jboss aop 1.5.5.GA - available here http://repository.jboss.com/jboss/aop/1.5.5.GA/lib/ javassisst 3.5.0.GA-brew - available here http://repository.jboss.com/javassist/3.5.0.GA-brew/lib/ trove 1.0.2-brew - available here http://repository.jboss.com/trove/1.0.2-brew/lib/ also you'll need log4j - we test with 1.2.14 View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4055179#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...